CN202313682U - Axial moving fixator with two claws - Google Patents
Axial moving fixator with two claws Download PDFInfo
- Publication number
- CN202313682U CN202313682U CN2011204660854U CN201120466085U CN202313682U CN 202313682 U CN202313682 U CN 202313682U CN 2011204660854 U CN2011204660854 U CN 2011204660854U CN 201120466085 U CN201120466085 U CN 201120466085U CN 202313682 U CN202313682 U CN 202313682U
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- hole
- pawl
- screw
- bone
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Abstract
The utility model belongs to the field of medical instruments and is suitable for resetting and fixing free osteocomma temporarily when open reduction and internal fixation is performed on long tubular bone fracture of four limbs; or the fixator can be used as the auxiliary tool for steel plate internal fixation and screw internal fixation on long tubular bone fracture of four limbs; and the fixator is composed of a constant claw, a moving claw, a sleeve, a locating screw and an opening gasket. The constant claw and the moving claw are called as two-claw; when the fixator is used, the middle surrounds the bone or steel plate and bone; the axial rod of the constant claw passes through the irregular hole and the opening gasket of the moving claw and then is screwed into the threaded hole of the sleeve; the two claws are fastened by screwing the sleeve, so that the free osteocomma or steel plate and bone can be fixed temporarily. The utility model has smart volume; the action force is consistently and concentrically perpendicular to the bone; and with the advantages of convenience in operation, firmness in fixation and no repeated operation, the axial moving fixator with two claws has clinical promotional value.
Description
Technical field
This utility model belongs to medical instruments field, when being applicable to the capable open reduction internal fixation of long bone fracture the free bone osteocomma is resetted with fixing temporarily the aid when also can be used as the capable steel plate of long bone fracture, screw internal fixation.
Background technology
When the human limb long bone receives the external force effect that fracture takes place; Reset for fracture is reached preferably, effective fixing, early functional exercise; Clinical normal employing open reduction internal fixation treatment, particularly bigger free bone cips, adopting resets combines the tensile screw internal fixation treatment; Make the bone contact closely, help the reduction of the fracture, fixing and healing.At present clinically to free bone fragment reset temporarily, fixed apparatus has the bone holding forceps holding formula bone holder, reduction forceps, button gram pincers, iris pincers, mosquito forceps and lock function is arranged etc.; All hold the formula structural design with pincers; Though it is simple to operate; Easy to use, but the ubiquity model is single, active force decentraction, fixed apparatus are loosening easily or move, and causes the shortcoming of displacement fracture.When being expert at steel plate, screw fixings, normal appearance boring, tapping back pull screw can not pass through bone hole phenomenon smoothly, need repeatable operation, prolong operating time.This utility model has remedied above-mentioned defective well, does not need manual work to control during operation, can fathom automatically, and can implement boring, tapping simultaneously, is screwed into operations such as screw, have advantages of small volume, easy and simple to handle, active force is concentric and constant advantage.
Summary of the invention
This utility model is the medical stainless steel material, designs large, medium and small three models, is formed by constant pawl (1), moving jaws (2), sleeve (3), set screw (4), (5) five unit constructions of opening pad.
Constant pawl (1) outward appearance is L-shaped, and short part is corpus unguis (6), long part axostylus axostyle (7), the two vertical each other connection.Corpus unguis (6) becomes the short cylinder structure, and two ends (8) slightly in the arc-shaped are circular arc camber with the corresponding side of axostylus axostyle (7), the horizontal shape tooth of uniform distribution (11) on it.Axostylus axostyle (7) is for being furnished with the cylinder of screw thread (9), and a side becomes string shape damaged (12), forms a rectangular planes (10), and opposite side becomes " V " shape damaged, forms " V " shape wire casing (13).
Moving jaws (2) profile is a rectangular structure; Wherein an end is in the arc-shaped, and circularizing projection laterally along circular arc is outstanding ring (22), and outstanding ring (22) center is the irregular hole (23) of a perforation; The axostylus axostyle of this hole shape and constant pawl (7) profile matches; Can make moving jaws (2) go up axle at axostylus axostyle (7) and move, it is set screw hole (24) that there is a screwed hole parallel with irregular hole, its center (23) outstanding ring (22) below, supplies set screw (4) to screw in; Tooth (25) is walked crosswise in opposite side opening part peripheral distribution in set screw hole (24), and is corresponding with the horizontal shape tooth (11) on the constant pawl.
Sleeve (3) is an open circles tubular structure, middle through hole for supplying axostylus axostyle (7) to screw in, and screw terminal is screwed hole (21); One outside outstanding outstanding ring (20) is arranged outside it; Corresponding with the outstanding ring (22) on the moving jaws, the other end is regular hexagon opening (15), and it is observation window (19) that the sleeve centre has the rectangle of a pair of perforation damaged; The observation window both sides are furnished with dimension line (18), and the sleeve afterbody has a symmetric center that the rectangular handle (16) of circular hole (17) is arranged.
Set screw (4) size matches with set screw hole (24); Cap nut (28) becomes flat outwards outstanding; The center has a through hole to claim set screw centre bore (29), and this hole is regular hexagon (30) in the cap nut upper shed, is circular (33) at other end opening; Be furnished with the screw thread (31) that matches with set screw hole (24) screw thread on the screw body, screw is most advanced and sophisticated for boring post (32) type.
Opening pad (5) is one the circulus of opening to be arranged; Its external diameter (34) equates with outstanding ring (20,22) external diameter; Internal diameter (35) is slightly larger than axostylus axostyle (7) external diameter; Make things convenient for axostylus axostyle (7) to pass, opening (36,37) is slightly crooked to up and down respectively, can make the outstanding ring of sleeve (20) that is in contact with it be flexible fastening with the outstanding ring of moving jaws (22).
Constant pawl (1), moving jaws (2) close title " two pawls "; During use, encircle bone or steel plate and bone between wherein, the axostylus axostyle of constant pawl (7) passes irregular hole (23), the opening pad (5) of moving jaws; Screw in telescopic screwed hole (21) again; Through the sleeve of screwing (3), can make " two pawls " fastening, thereby realize temporary fixed to free bone fragment or steel plate and bone.
The utlity model has following benefit:
1, whole device is combined by five individual components, and compact conformation makes active force remain at axis direction;
2, sleeve screw-in structure obviously shortens whole device length, saves raw material, and the design of observation window on it (19) and dimension line (18) has the function that fathoms automatically;
3, independence, one, movably moving jaws (2) is gone up axle at constant pawl axostylus axostyle (7) and is moved, and effectively avoids it loosening or the active force decentraction occurs and make the displacement fracture phenomenon;
4, the rectangular planes (9) of constant pawl axostylus axostyle (7) and " V " shape wire casing; Match with irregular hole (23) structure on the moving jaws, spin mutually, moving jaws (2) axle is moved with telescopic screwed hole (21); Can make sleeve (3) rotation again, have the well anti-function of revolving simultaneously;
5, telescopic handle (16) makes things convenient for precession or screws out sleeve, and its two ends circular hole (17) can supply osseous pin to insert to screw and pulling off sleeves; The regular hexagon opening (15) of sleeve tail end can supply die nut, the turret drill electric drill sleeve of screwing, and to increase active force, effectively saves operating time.
6, go up Design Orientation screw hole (24) at moving jaws (2); But placement positioning screw (4) through set screw centre bore (29) and set screw hole (24), can be holed to bone, tapping and be screwed into screw; When needing the steel plate internal fixation; The awl post (32) of set screw can accurately be aimed at steel plate hole, has the steel plate holder, holds up function, avoids the landing of operating process light plate.
7, this utility model advantages of small volume, active force and bone remain concentric vertical, simple operation, and fixation does not need repeatable operation.
Description of drawings:
Fig. 1, two pawl axles move the retainer shaft view;
Fig. 2, constant pawl axonometric drawing;
Fig. 3, Fig. 2 to view;
Fig. 4, quill view
Fig. 5, Fig. 4 to view;
Fig. 6, moving jaws axonometric drawing
Fig. 7, Fig. 6 to view;
Fig. 8, set screw axonometric drawing
Fig. 9, Fig. 8 to view;
Figure 10, open washer sheet axonometric drawing.
The specific embodiment
1, below in conjunction with accompanying drawing this utility model embodiment is specifically described
Fig. 1 is that the two pawl axles that assemble move the retainer shaft view; The axostylus axostyle of constant pawl (7) passes irregular hole (23), the opening pad (4) of moving jaws; Screw in telescopic screwed hole (21) again, set screw (4) screws in the set screw hole (24) of moving jaws, i.e. assembled.
Fig. 2, Fig. 3 are the axonometric drawing of constant pawl (1) and to view.The corpus unguis (6) of constant pawl (1) two ends up and down all becomes circular arc (8), forms slightly aduncate " pawl " shape structure, and inner arc shape defect is furnished with several and walks crosswise tooth (11), and this tooth contacts with surface of bone, has anti-skidding, anti-drop function.Walk crosswise tooth (11) center and design a circular hole (14), this hole is concentric with the set screw hole (24) of moving jaws, pierces this hole after passing cortical bone during bit bore, and that avoids getting into constant pawl walks crosswise tooth (11) damage drill bit.The rectangular planes (10) that the string shape of axostylus axostyle (7) damaged (12) forms, and " V " shape wire casing (13) of offside matches with irregular hole (23) structure of moving jaws just is convenient to moving jaws (2) and is gone up at axostylus axostyle (7) and spool move.Screw thread (9) on the axostylus axostyle (7) matches with the screwed hole (21) of sleeve (3), is convenient to axostylus axostyle (7) and screws in the sleeve (3).
Fig. 4, Fig. 5 are telescopic axonometric drawing and to view; Sleeve is the hollow cylinder of a band handle (16); Through rotary handle (16), can make axostylus axostyle (7) screw in telescopic screwed hole (21), the available finger of handle (16) is controlled rotation; Also can insert osseous pin at the circular hole (17) of handle (16) both sides and be further rotated sleeve (3), work the effect of fixedly securing.The outstanding ring (20) that barrel forward end is outwards outstanding is big or small with the outstanding ring (22) on the moving jaws, shape equates, and is middle with opening pad (5) separation, plays resiliently mounted effect.The regular hexagon opening (15) of sleeve handle end can insert die nut or turret drill is rotated.(observation window (19) of 3 outsides can be observed the position that constant pawl axostylus axostyle (7) afterbody screws in from both direction to sleeve, and its pairing yardstick is moving jaws (2) and the isolating length of constant pawl (1), also is the length of the used screw of fixation steel plate.
Fig. 6, Fig. 7 are the axonometric drawing of moving jaws and to view.Irregular hole (23) internal structure of moving jaws and the external structure of constant pawl axostylus axostyle (7) match; Be plane (26) on it, be " ∧ " shape protruding (27) down, axostylus axostyle (7) passes this hole; Moving jaws (2) can be gone up axle at axostylus axostyle (7) and move, realize with the butt joint of constant pawl (1) with separate.The horizontal shape tooth (25) of moving jaws and constant pawl to walk crosswise tooth (11) corresponding, form " two pawls " circumferential type structure.The set screw hole (24) that moving jaws is walked crosswise tooth (25) center is concentric with the circular hole (14) that constant pawl is walked crosswise tooth (11) center, and set screw (4) can screw in this set screw hole (24), makes things convenient for boring, tapping and DRIVE SCREWS nail.
Fig. 8, Fig. 9 are the axonometric drawing of set screw and to view.Before the operation, need earlier set screw (4) to be screwed in the set screw hole (24).When fixing dish-shaped osteocomma of fracturing or diagonal osteocomma, the most advanced and sophisticated awl post (32) of set screw (4) is aimed at the position that needs screw fixings, can hole through the centre bore (29) of set screw.When fracture row steel plate, screw internal fixation, the awl post (32) of set screw (4) is aimed at steel plate hole, can locate accurately and prevent that steel plate from sliding, and also can hole through the centre bore (29) of set screw (4).
Figure 10 is opening pad (a 5) axonometric drawing.Opening pad (5) places in the middle of the outstanding ring (22) and telescopic outstanding ring (20) of moving jaws (2), plays the flexible fastening effect.
2, below in conjunction with specific operation process this utility model specific embodiment is done specific descriptions:
The capable screw internal fixation of example 1, butterfly osteocomma or oblique fracture
Appear fracture site by OP, after the satisfaction that resets, the two pawl axles of selecting to have assembled suitable types move holder; Hand-held handle (16) opposite spin sleeve (3) moves moving jaws (2) to outer shaft, and moving jaws (2) is fully separated with constant pawl (1); Respectively " two pawls " is placed on the butterfly osteocomma that resetted or tubular bone two outsides of oblique fracture, the tooth (25) of walking crosswise of walking crosswise tooth (11) and moving jaws of constant pawl is encircled tubular bone, positive direction rotary handle (16); Sleeve (3) is screwed; Insert circular hole (17) with osseous pin in case of necessity and further screw, at this moment, " two pawls " encircled bone fixing.Select suitable drill bit; Directly carry out bone drilling with electric drill, having the when sense proof of falling through to bore the circular hole (14) that the offside cortical bone gets into constant pawl, stop boring through set screw centre bore (29); Remove electric drill; With hexagonal screwdriver opposite spin set screw (4), take off set screw (4), select suitable thread tapper tapping to be carried out in the bone hole of boring through the set screw hole (24) of dismantling down set screw; Check the terminal corresponding yardstick of constant pawl axostylus axostyle (7) through observation window (19), be the length of required screw.Select the screw of appropriate length, directly screw is screwed into the bone hole through set screw hole (24).After confirming screw assembling, fixation, opposite spin handle (16), moving sleeve (3), outwards side shaft moves moving jaws (2), and " two pawls " fully separated, and takes out two pawl axles and moves holder, accomplishes whole operation, and skin suture finishes operation.
When needing many pieces of screw fixings, can place two two pawl axles simultaneously and move holder, operate with said method, wherein one move holder to two pawl axles and carry out the screw assembling, fix, another two pawls axle moves holder and can play the auxiliary fixing effect.Assembled the detachable position that needs the assembling screw nail to another of changing of one piece of screw,, dismantled two two pawl axles and move holder, accomplished whole operation until whole screw assemblings, the fixing end.Move holder if only prepare one two pawl axle, can assemble one piece of screw after, pull down two pawl axles and move holder and change the position repetitive operation, so repeatedly until assembled.
Example 2, steel plate, screw internal fixation
According to fracture site, type and degree, can use two pawl axles to move holder separately, or be used with other fixed apparatus.Shown in example 1, appear fracture site, after the satisfaction that resets, the steel plate of selection suitable types and the two pawl axles that assembled move holder; Steel plate is placed the bone outside, hold handle (16) opposite spin sleeve (3), move moving jaws (2) to outer shaft; Moving jaws (2) is fully separated with constant pawl (1); Moving jaws (2) is placed on the steel plate outside, and it is walked crosswise tooth (25) and aims at steel plate, and the awl post (32) of set screw is aimed at steel plate hole; Constant pawl (1) places outside the steel plate offside tubular bone, and the tooth (11) of walking crosswise of constant pawl is contacted with surface of bone.At this moment, the tooth (25) of walking crosswise of walking crosswise tooth (11) and moving jaws of constant pawl is encircled steel plate and bone, and positive direction rotary handle (16) is screwed sleeve (3), inserts circular hole (17) with osseous pin in case of necessity and further screws, and " two pawls " encircled steel plate and bone fixing.Hole through the centre bore (29) of set screw like example 1 said method, take off set screw (4) and carry out tapping, assembling screw nail, dismantle two pawl axles and move holder; Reuse with quadrat method to other steel plate hole hole, tapping, assembling screw nail; Until screw assembling, the fixing end, dismantle two pawl axles and move holder and other fixed apparatus, complete operation; Skin suture finishes operation.
Claims (7)
1. two pawl axles move holder, it is characterized in that: formed by constant pawl (1), moving jaws (2), sleeve (3), set screw (4), (5) five unit constructions of opening pad.
2. two pawl axles according to claim 1 move holder, it is characterized in that: said constant pawl outward appearance is L-shaped, and short part is corpus unguis (6); Long part axostylus axostyle (7); The two vertical each other connection, corpus unguis becomes the short cylinder structure, two ends (8) slightly in the arc-shaped; A corresponding side with axostylus axostyle is a circular arc camber, the horizontal shape tooth of uniform distribution (11) on it; Axostylus axostyle is the cylinder that is furnished with screw thread, and a side becomes string shape damaged (12), forms a rectangular planes (10), and opposite side becomes " V " shape damaged, forms " V " shape wire casing (13).
3. two pawl axles according to claim 1 move holder; It is characterized in that: said moving jaws profile is a rectangular structure; Wherein an end is in the arc-shaped; Circularize projection laterally along circular arc and be outstanding ring (22), the set screw hole (24) that the irregular hole (23) that shape that outstanding ring center is a perforation and constant pawl axostylus axostyle profile match, its below have a confession set screw (4) parallel with this hole to screw in; Tooth (25) is walked crosswise in opposite side opening part peripheral distribution in this hole, and is corresponding with the horizontal shape tooth (11) on the constant pawl (1).
4. two pawl axles according to claim 1 move holder; It is characterized in that: said sleeve is an open circles tubular structure, middle through hole for supplying axostylus axostyle to screw in, and screw terminal is screwed hole (21); One outside outstanding outstanding ring (20) is arranged outside it; Corresponding with the outstanding ring (22) on the moving jaws, the other end is regular hexagon opening (15), and it is observation window (19) that the sleeve centre has the rectangle of a pair of perforation damaged; The observation window both sides are furnished with dimension line (18), and the sleeve afterbody has a symmetric center that the rectangular handle (16) of circular hole (17) is arranged.
5. two pawl axles according to claim 1 move holder; It is characterized in that: said set screw size matches with the set screw hole, and cap nut (28) becomes flat outwards outstanding, and there is a through hole (29) at the center; This hole is regular hexagon (30) in the cap nut upper shed; At other end opening is circular (33), is furnished with the screw thread (31) that matches with set screw hole screw thread on the screw body, and screw is most advanced and sophisticated for boring post (32) type.
6. two pawl axles according to claim 1 move holder, it is characterized in that: said opening pad (5) is one the circulus of opening to be arranged, and opening is slightly crooked to up and down respectively, can make the outstanding ring with its contact both sides be flexible fastening.
7. two pawl axles according to claim 1 move holder, it is characterized in that: said constant pawl, moving jaws close title " two pawls ", during use; Encircle bone or steel plate and bone wherein; The axostylus axostyle of constant pawl passes irregular centre bore, the opening pad of moving jaws, screws in the telescopic screwed hole, through the sleeve of screwing again; Can make " two pawls " fastening, thereby realize the temporary fixed of free bone fragment or steel plate and bone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204660854U CN202313682U (en) | 2010-11-23 | 2011-11-07 | Axial moving fixator with two claws |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020631827.X | 2010-11-23 | ||
| CN201020631827 | 2010-11-23 | ||
| CN2011204660854U CN202313682U (en) | 2010-11-23 | 2011-11-07 | Axial moving fixator with two claws |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202313682U true CN202313682U (en) | 2012-07-11 |
Family
ID=46425687
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204660854U Expired - Fee Related CN202313682U (en) | 2010-11-23 | 2011-11-07 | Axial moving fixator with two claws |
| CN2011204661170U Expired - Fee Related CN202313677U (en) | 2010-11-23 | 2011-11-07 | Novel three-claw fixing device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204661170U Expired - Fee Related CN202313677U (en) | 2010-11-23 | 2011-11-07 | Novel three-claw fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN202313682U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104688308A (en) * | 2015-03-03 | 2015-06-10 | 常州华森医疗器械有限公司 | Sternum folding fixator easy to disassemble |
| CN109009487A (en) * | 2018-08-13 | 2018-12-18 | 顾洪军 | A kind of novel traction reset balancing stand |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463715A (en) * | 2019-01-22 | 2020-07-28 | 国网上海市电力公司 | A drive electrified mounting tool of bird ware for distribution lines |
-
2011
- 2011-11-07 CN CN2011204660854U patent/CN202313682U/en not_active Expired - Fee Related
- 2011-11-07 CN CN2011204661170U patent/CN202313677U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104688308A (en) * | 2015-03-03 | 2015-06-10 | 常州华森医疗器械有限公司 | Sternum folding fixator easy to disassemble |
| CN109009487A (en) * | 2018-08-13 | 2018-12-18 | 顾洪军 | A kind of novel traction reset balancing stand |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202313677U (en) | 2012-07-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20141107 |
|
| EXPY | Termination of patent right or utility model |